Sleeping often bites the edge of the tongue, which may be related to tongue inflammation or tongue hypertrophy, bite muscle, and tongue muscle dysfunction. If there are symptoms such as local pain or swelling, you can go to the hospital for examination and treatment. Sleeping often bites the tongue may also be related to dental malocclusion or lack of trace elements, vitamin B6, etc. You can take multivitamins to increase the intake of foods with high trace element content. Calcium deficient people who sleep at night with poor quality may also appear grinding teeth, bite to the tongue symptoms can be appropriate amount of calcium supplements, cod liver oil. Biting the tongue repeatedly while sleeping may also be related to cerebrovascular diseases such as cerebral infarction, hypertension, hyperlipidemia, diabetes, etc. If accompanied by dizziness, headache, slurred speech, unstable walking and other symptoms should be actively treated.